/*
 * Copyright (c) 2019, RPTU Kaiserslautern-Landau
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER
 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Author: Lukas Steiner
 */

#include "RespQueueFifo.h"

using namespace sc_core;
using namespace tlm;

namespace DRAMSys
{

void RespQueueFifo::insertPayload(tlm_generic_payload* payload, sc_time strobeEnd)
{
    buffer.emplace(payload, strobeEnd);
}

tlm_generic_payload* RespQueueFifo::nextPayload()
{
    if (!buffer.empty())
    {
        std::pair<tlm_generic_payload*, sc_time> element = buffer.front();
        if (element.second <= sc_time_stamp())
        {
            buffer.pop();
            return element.first;
        }
    }
    return nullptr;
}

sc_time RespQueueFifo::getTriggerTime() const
{
    if (!buffer.empty())
    {
        sc_time triggerTime = buffer.front().second;
        if (triggerTime > sc_time_stamp())
            return triggerTime;
    }
    return scMaxTime;
}

} // namespace DRAMSys
